🛡️ ALSA-2026:46398 — libreswan

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)
  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected software

ALSA-2026:46398 is recorded against 2 packages.

  • libreswan (fixed in 5.3.2-1.el10_2)
  • libreswan-minimal (fixed in 5.3.2-1.el10_2)

Timeline and source

Published on 27 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

access.redhat.com (Advisory)
access.redhat.com (Report)
access.redhat.com (Report)
access.redhat.com (Report)
access.redhat.com (Report)
bugzilla.redhat.com (Report)
bugzilla.redhat.com (Report)
bugzilla.redhat.com (Report)
bugzilla.redhat.com (Report)
errata.almalinux.org (Advisory)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-27
Updated 2026-08-12
Modified 2026-07-27
Fix URL N/A

Affected Packages

Software From version Fixed in
libreswan — 5.3.2-1.el10_2
libreswan-minimal — 5.3.2-1.el10_2

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